Anatomy Additional Flashcards
Pyloric sphincter is made of
thickening of middle circular layer of muscularis externa
A favored route by food, fluids and drugs as they flow from the cardia/fundus to the gastric outlet; site of peptic ulcer formation; adjacent to lesser curvature
Magenstrasse (stomach street)
Location of jejunum and ileum by quadrant
Jejunum (LUQ)
Ileum (RLQ)
Specialized region in small intestine (duodenum) that secrete alkaline fluid and urogastrone (inhibits gastric HCl production)
Brunner’s glands (in submucosa of duodenum)
Specialized region in small intestine (jejunum) that has spiral/circular folds and increase SA by 2-fold
Plicae Circulares
Specialized region in small intestine (ileum) that has large lymphoid nodules (GALT) extending into submucosa
Peyer’s patches
Ileocecal sphincter is made of
thickening of inner circular layer of muscularis externa
What parts of colon are retroperitoneal?
Ascending colon
Descending colon
What parts of colon are intraperitoneal?
Transverse colon
Sigmoid colon
What are the unique features of colon (large intestine)?
- Epiploic appendages
- Teniae Coli
- Haustra
Unique feature of colon: small pouches of peritoneum filled with fat
Epiploic appendages
Unique feature of colon: longitudinal ribbons of smooth muscles along the colon
Teniae Coli
Unique feature of colon: small segmental pouches; formed when teniae coli are continuously contracted
Haustra
Above or Below pectinate line: Mucous membrane, simple columnar, visceral sensory innervation (dull), venous drainage to portal system, lymphatic drainage to internal iliac nodes
Above pectinate line (proximal to)
Above or Below pectinate line: skin, stratified squamous epithelium, general sensory innervation (painful), venous drainage to systemic system, lymphatic drainage to superficial inguinal nodes
Below pectinate line (distal to)
